Interannual variation of freshwater transport through the Korea Strait

Title
Interannual variation of freshwater transport through the Korea Strait
Author(s)
김창신; 조양기; 최병주; 정경태
Publication Year
2013-06-14
Abstract
The variability of freshwater transport in the Korea Strait (FTKS) affects the circulation and ecosystem of the East/Japan Sea. Numerical simulations using realistic surface forcing, Changjiang River discharge (CRD), and open boundary values were performed to quantify the interannual variation of FTKS and to investigate its underlying physical processes. The simulated salinity and volume transport, which determine the variability of FTKS, were verified by comparing with observations. Salinity played a more important role than volume transport in inducing the interannual variation of FTKS. FTKS has a positive correlation with CRD, the difference between precipitation and evaporation (P-E), southeasterly wind, and freshwater transport in the Taiwan Strait (FTTS). FTKS has its best correlation (0.62) with FTTS. The correlations with CRD (0.25) and P-E (0.37) are weaker, probably due to wind stress. The southeasterly wind that drives Changjiang diluted water toward the Korea Strait by Ekman flow in the East China Sea has good correlation (0.51) with FTKS. The vertical structures of FTKS and its variability are more effectively affected by CRD and P-E in the surface layer, FTTS in the middle layer, and the wind in the subsurface layer.s were performed to quantify the interannual variation of FTKS and to investigate its underlying physical processes. The simulated salinity and volume transport, which determine the variability of FTKS, were verified by comparing with observations. Salinity played a more important role than volume transport in inducing the interannual variation of FTKS. FTKS has a positive correlation with CRD, the difference between precipitation and evaporation (P-E), southeasterly wind, and freshwater transport in the Taiwan Strait (FTTS). FTKS has its best correlation (0.62) with FTTS. The correlations with CRD (0.25) and P-E (0.37) are weaker, probably due to wind stress. The southeasterly wind that drives Changjiang diluted water toward the Korea Strait by Ekman flow in the East China Sea has good correlation (0.51) with FTKS. The vertical structures of FTKS and its variability are more effectively affected by CRD and P-E in the surface layer, FTTS in the middle layer, and the wind in the subsurface layer.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26920
Bibliographic Citation
2nd China-Korea Workshop on oceanic monitoring and development of prediction system of radionuclides for nuclear safety, pp.33, 2013
Publisher
FIO-KIOST
Type
Conference
Language
English
Publisher
FIO-KIOST
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